Linux Shell 自动备份脚本

写一个使用shell脚本增量备份系统文件，顺便复习一下shell脚本相关的命令，这个脚本可以根据自己的需求来备份不同的文件或者文件夹，进行完整备份和增量备份。

参考的网址：http://blog.51cto.com/wgkgood/1330200

直接上脚本如下：

 

#########################################################################
# File Name: back_template.sh
# Author: happy
# mail: zaqwsx526@163.com
# Created Time: Wed 06 Jun 2018 12:17:16 PM CST
#########################################################################
#!/bin/bash
SOURCE_DIR=(
    $*
    )
TARGET_DIR=/backup/data/
YEAR=`date +%Y`
MONTH=`date +%m`
DAY=`date +%d`
WEEK=`date +%u`
FILES=system_backup.tgz
CODE=$?
if [ -z "$*" ];then
    echo -e "Please Enter Your Backup Files or Directories\n--------------------------------------------\nExample $0 /boot /etc ......"
    exit
fi
#Determine Whether the Target Directory Exists
if [ ! -d $TARGET_DIR/$YEAR/$MONTH/$DAY ];then
    mkdir -p $TARGET_DIR/$YEAR/$MONTH/$DAY
    echo "This $TARGET_DIR is Created Successfully !"
fi
#EXEC Full_Backup Function Command""
Full_Backup()
{
    if [ "$WEEK" -eq "7" ];then
        rm -rf $TARGET_DIR/snapshot
        cd $TARGET_DIR/$YEAR/$MONTH/$DAY
        tar -g $TARGET_DIR/snapshot -czvf $FILES `echo ${SOURCE_DIR[@]}`
        [ "$CODE" == "0" ]&&echo -e  "--------------------------------------------\nThese Full_Backup System Files Backup Successfully !"
    fi
}
#Perform incremental BACKUP Function Command
Add_Backup()
{
    cd $TARGET_DIR/$YEAR/$MONTH/$DAY ;
    if [ -f $TARGET_DIR/$YEAR/$MONTH/$DAY/$FILES ];then
        read -p "These $FILES Already Exists, overwrite confirmation yes or no ? : " SURE
        if [ $SURE == "no" -o $SURE == "n" ];then
            sleep 1 ;exit 0
        fi
        #Add_Backup Files System
        if [ $WEEK -ne "7" ];then
            cd $TARGET_DIR/$YEAR/$MONTH/$DAY ;tar -g $TARGET_DIR/snapshot -czvf $$_$FILES `echo ${SOURCE_DIR[@]}`
            [ "$CODE" == "0" ]&&echo -e  "-----------------------------------------\nThese Add_Backup System Files Backup Successfully !"
        fi
    else
        if [ $WEEK -ne "7" ];then
            cd $TARGET_DIR/$YEAR/$MONTH/$DAY ;tar -g $TARGET_DIR/snapshot -czvf $FILES `echo ${SOURCE_DIR[@]}`
            [ "$CODE" == "0" ]&&echo -e  "-------------------------------------------\nThese Add_Backup System Files Backup Successfully !"
        fi
    fi
}
Full_Backup;Add_Backup